Environmental Issues Caused by Fertilisers (AQA A-Level Biology): Flashcards
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Practise the cards
10 cards from this deck
What is leaching?
What is leaching?
Process where nutrients are removed from soil by water
What is eutrophication?
What is eutrophication?
Process where nutrient concentrations increase in water bodies
Why farmers add nitrogen fertilisers
Why farmers add nitrogen fertilisers
Replace nutrients lost when crops harvested and removed
Effect of nitrogen-rich soils on biodiversity
Effect of nitrogen-rich soils on biodiversity
Fast-growing species outcompete others, reducing biodiversity
Algal bloom
Algal bloom
Dense layer of algae at water surface
Saprobiotic bacteria role
Saprobiotic bacteria role
Decompose dead organic matter
Initial limiting factor in freshwater
Initial limiting factor in freshwater
Nitrogen (nitrate ions)
Effect of oxygen depletion in water
Effect of oxygen depletion in water
Aerobic organisms like fish die
Toxic waste from anaerobic bacteria
Toxic waste from anaerobic bacteria
Hydrogen sulphide
Timeframe for fertiliser impact on water
Timeframe for fertiliser impact on water
Days to weeks